“... apparently a lot of other parents thought herd immunity was so strong they didn’t need to vaccinate their kids.”
Maybe try and read the article first before you post ignorant comments? One of the exposed was too young to be vaccinated for it, and another was being treated for leukemia and had a compromised immune system, so they couldn’t be vaccinated either.
The two who couldn't be vaccinated because of their condition are a sad happening. I'm not blaming them or their parents. However, I heard that the reason this episode came to our attention was that the infected family led to a significant outbreak...much more than those of the two unfortunate kids who couldn't be vaccinated.
Most of those other kids had parents who decided they didn't need to be vaccinated. Did they do it for medical or other reasons? If their decision was "other," than shouldn't an estimate of how common vaccination was around them be part of that decision?